This is just a short post today as I am still thinking about whether I am going down the right road or not.
Do we actually need a Body Development skill?
Every race has a racial maximum so it is a bit of a development tax, every character has to buy it, on low level characters. Once you have maxed out your #hits you can just forget about it.
It is one of the more complex calculations and I have seen people posting on the forum getting the calculation for total hits wrong when it comes to a negative Con stat bonus.